Foot-power hammer



No. 625,870. 4 Patentedl'llay 30, I899. w. u. BURGETT.

FOOT POWER HAMMER.

(Apylication filed Aug. 5, 1898.)

'(No Model.)

8 QM. W

WITNESSES INVENTOR Attorney UNITED STATES PATENT OFFICE.

WILLIAM U. BURGETT, OF DANVILLE, ILLINOIS.

FOOT-POWER HAMMER.

SPECIFICATION forming part of Letters Patent No. 625,870, dated May 30, 1899. Application filed August 5,1898. Serial No.687,836. (N0 model.)

To ztZZ whom, it may concern:

Be it known that I, WILLIAM U. BURGETT, a citizen of the United States, residing at Danville, in the county of Vermilion and State of Illinois, have invented certain new and useful Improvements in Foot-Power Hammers, of which the following is a specification, reference being had therein to the accompanying drawings.

This invention relates to a blacksmiths hammer or oliver operated by foot-power.

The object of the invention is to produce a mechanism by which a hammer may be made to strike a strong blow on an anvil or on anything on the anvil, in any desirable position on the anvil, the mechanism being quickly adjustable to different positions and capable of striking a good blow in any of its properlyacljusted posit-ions; and the improvement consists in the construction of parts and combination of elements by which these objects are attained.

Figure 1 is a-perspectiveview of an anvil with the improved power mechanism applied. Fig. 2 is a rear elevation of anvil-block, showing bracket 7, cross-bars 11, and connections by which the supporting-bars 10 are shifted in position. Fig. 3 is a partial section and partial elevation of the hammer-head, showing cushion.

"The anvil 1 is supported on a b1ock2, as usual. The block 2 is made a base for the attachment of thehammer-operating mechanism in whole or in part; but to avoid waste of room some of the mechanism may be sup- .ported from the floor, as in the drawings.

bracket 7, connected to the anvil-block;

A pitman or link 8 is connected by a similar pivot to the outer end of intermediate lever 6, and this pitman or link is pivoted to loop 9, which surrounds the ham mer-handle. The hammer being pivotally supported, a depression of the swinging end of lever 3 draws on bars 5, which bars rocklever 6 downward, and this draws on pitman 8 and loopt) and swings the hammer downward.

The bars 5 5 being'pivoted to the outer members of the foot-lever act as braces to support as well as draw on lever 6. The link or pitman 8 is preferably made in form of a truss, as shown, to be as light as possible and at the same time quite stiff. The pivotal connections are preferably bolts passing rather pins 14 the cross-bar llis rocked on its pivotal or swiveled connection to bracket 7, so as to raise one bar 10 and lower the other.

The connection to bracket 7 is loose, so that the outen endsof bars 10 may be raised or lowered.

The two bars 10 are pivoted to the stand- :ard 15 and also to the hammer-handle, as

spring 21 draws on the outer end of the han die and on the standard 15. This spring thus pulls down on the outer end of the handle, serving to lift the head 30 of the hammer. The pull of the spring also holds the notches of the standard-15 closely into engagement withthe catch 17.

As will be readily understood, the engage= ment of one or another of the notches 16 on the catch 17 lifts the outer ends of bars 10 more or less. As the outer end of these bars is let down it swings the pivot 23 of the hammer away from the anvil-block at least until the bars 10 come to horizontal position, and

this necessarily carries the hammer farther away from the anvil. I Thus the vertical adjustment of standard 15 determines to acousiderable extent the position of the hammer, and the hammer may be made to reach any position on the anvil within the limit of its adjustment by engaging different notches of standard with catch 17. pressure of the foot on the treadle-lever pulls the hammer down and on the release of the treadle-spring 21 raises the hammer.

The adjustment of lever 13 bet-ween pins 14 rocks one bar 10 upward andthe other downward, causing the pivot 23 to move a little from its horizontal position, and thus causing the blow of the hammer to be at one side or the other of the anvil. The easy fit of the pivots in the holes in the levers or bars permits this slight shift of theparts Without diffic'ulty.

, The loop 9 is held to handle of the hammer by set-screw 24 and can be moved so as to operate with greater or less leverage. The bars 5 may also be connected to lever 6 at different points. This gives a great range of adjustment, so that the hammer may be made to swing in almost any desired arc. The hammer-pivot 23 is also movable, as at 26.

The hammer preferably consists of a. peen or head 31, which has a recess therein in which a rubber or other elastic cushion 32 is placed. The hammer-spindle 33 in this cushion goes through a socket 34 on the handle and is held in by a pin or key 35. The spindle and the opening in socket 34:, through which the spindle passes, may be polygonal.

By the construction above described I am enabled to get a large range of adjustment and can strike with greater or less force, according to the nature of the work. The cushioned hammer relieves the jar on the foot in operating the machine, as also the jaron the mechanism, and causes very effective blows to be given without damage to machine or injury to operator.

The-foot-lever is accessible from either side I or from the front of the anvil, and no matter where pressure is applied to the foot-lever the power is applied centrally. The rockingor swiveling movement of levers 10 gives a capacity for striking at angles and in positions not accessible to such hammers as move in vertical guides or such hammers as swing in the same are at all times, such hammers bein g well known. A power-hammer with elastic cushion to the peen is well known, but not, so'far as I know, a hammer operated by a foot-lever.

'What I claim is-- 1. In a machine of the character described,

the. U-shaped treadle, bars connected to eachside thereof and to an intermediate lever pivoted to the anvil-support, the pi"otally supported hammer, and a link connecting the intermediate lever to the hammer-handle, all combined with an anvil substantially as described.

2. In a striking-machine of the character described, a treadle-lever at each side ofthe anvil-support, draw-bars connected thereto,

The downwardintermediate lever adj'ustably connected to the treadle-bars, and pivoted to the anvil-support, a pitman connected to such intermediate lever and adjustably connected to the hammer-handle, and a pivotal support on which the hammer swings, combined with an anvil substantially as described.

3. In a machine of the character described, the handle-supporting bars having a swivel connection to the anvil-support, the hammer having itshandle pivoted between said bars, means for operating the hammer, a lever pivoted tothe anvil-support and connected to the handle-supporting bars, and stops on the anvil-support by which said lever may be held in adjusted position to maintain thesupporting-bars in adjusted position, all combined substantially as described.

4. In a foot-power hammer, the. combination of the anvil and its support, the hammersupporting bars swiveled to the anvil-support, the hammer pivoted betweenv said bars and means for operating said hammer, and adjusting mechanism substantially as described connected to the hammer-bars and to the anvil-support, by which the ham mer-supportin g bars may be turned in angular direction and held While the hammer strikes anoblique blow, substantially as described.

5. In a machine of the character described, the hammer supporting bars pivotally connected to the anvil-support, the hammer pivoted to said bars, and a foot-lever and connections for operating said hammer, and the standard notched nearits lower end and pivotally connected to the hammer-supporting bars, said standard having its notches in position to engage a catch at the fioor. for vertical adjustment, substantially as described. 6. In a power-hammer, the anvil, support, and hammer-supporting bars pivotally connected to the anvil-support, the hammer pivoted between said hammer-supporting bars and means foroperating said hammer, the

standard pivoted to said hammer-supporting bars and having notches near its lower end in position to engage a catch attached to the floor, and a spring connected to the hammer: handle and to the standard, adapted to lift the hammer and to draw a notch of the standard into engagement with the floor-catch,'all combined substantially as described.

' 7. The hammer having a head with a recess therein, an elastic cushion in said recess, a spindle embedded in said cushion and passing through a socket in the handle, and the handle-support and connections therefrom extending to the foot-lever whereby the shock of operating the foot-lever is reduced by the elastic cushion, all substantially as described.

WILLIAM U. BURGETT.

Witnesses: H. H. WHITLooK,

W. H. TAYLOR. 

